The blades of a forward-inclined fan are forward-curved relative to the impeller rotation direction, hence called forward-inclined fans Forward-inclined fans are mainly used in operating conditions with relatively low rotational speed, large airflow volume, and low pressure。 Typically, the selection pressure of forward-inclined fans does not e×ceed 1000Pa, and the static pressure efficiency is generally not more than 55% Forward-inclined fans have relatively high outlet air velocity, so they can obtain large airflow volume under low rotational speed conditions，在一般情况 下相比其他类型的风机，They have the advantages of small size and low noise, but with lower efficiency。 前倾风机在固定Rotational Speed的情况下，如果Pressure降低，Airflow Volume增加，风机Shaft Power会急剧提升， 这种现象称为过载现象，容易导致电机烧毁。 